Three years into the Kaiju War Tokyo came under attack. Despite the efforts of the military, Onibaba devastated the city; among the victims killed were the parents of Mako Mori, who was eleven at the time. The Mark-1 Jaeger, Coyote Tango, was deployed into the city and killed the Kaiju, saving the life of Mako.
Plans to construct a Shatterdome in the area were announced shortly thereafter. On December 15, 2016, seven months after the incident, the Pan Pacific Defense Corps opened the Tokyo Shatterdome.